The Mancini tool sucked the old ones out of a few sets of original lowers I had, I bet the aftemarket ones were put together out of what ever they had on the shelf.
The OEM ones must have the same tolerance for thousands of the same cars.
The rubber bushings sold now won’t last 40 years. The MOOG rubber set of LCA bushings I ran on my Challenger didn’t last 4, one was completely thrashed before the 40k mile mark. The poly bushings I replaced them with still look brand new after 30k.
Properly installed the poly bushings will outlast any of the rubber bushings out there.